EP0330275A3 - Teletext decoder arrangements - Google Patents

Teletext decoder arrangements Download PDF

Info

Publication number
EP0330275A3
EP0330275A3 EP89200407A EP89200407A EP0330275A3 EP 0330275 A3 EP0330275 A3 EP 0330275A3 EP 89200407 A EP89200407 A EP 89200407A EP 89200407 A EP89200407 A EP 89200407A EP 0330275 A3 EP0330275 A3 EP 0330275A3
Authority
EP
European Patent Office
Prior art keywords
memory
page
data acquisition
chapters
teletext decoder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP89200407A
Other languages
German (de)
French (fr)
Other versions
EP0330275A2 (en
Inventor
Richard Edward Frederick Bugg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philips Electronics UK Ltd
Koninklijke Philips NV
Original Assignee
Philips Electronic and Associated Industries Ltd
Philips Electronics UK Ltd
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics NV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Electronic and Associated Industries Ltd, Philips Electronics UK Ltd, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Electronic and Associated Industries Ltd
Publication of EP0330275A2 publication Critical patent/EP0330275A2/en
Publication of EP0330275A3 publication Critical patent/EP0330275A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/087—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only
    • H04N7/088—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital
    • H04N7/0882—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division with signal insertion during the vertical blanking interval only the inserted signal being digital for the transmission of character code signals, e.g. for teletext

Abstract

A teletext decoder arrangement has a page memory comprising a large number of chapters or portions in which individual pages can be stored. The arrangement has a plurality of data acquisition circuits which can acquire separate pages simultaneously. A register file is provided having a word location for each data acquisition circuit. A processor can load a memory chapter pointer byte into a word location when a page is to be acquired by the related data acquisition circuit so as to allot the memory chapter identified by the pointer byte for the storage of that page. In a practical embodiment four 4-bit word locations can have any one of 16 different 4-bit pointer bytes loaded into them to identify any one of 16 different memory chapters.
EP89200407A 1988-02-26 1989-02-20 Teletext decoder arrangements Withdrawn EP0330275A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8804608A GB2215569A (en) 1988-02-26 1988-02-26 Multi-page teletext decoder arrangements
GB8804608 1988-02-26

Publications (2)

Publication Number Publication Date
EP0330275A2 EP0330275A2 (en) 1989-08-30
EP0330275A3 true EP0330275A3 (en) 1990-05-23

Family

ID=10632474

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89200407A Withdrawn EP0330275A3 (en) 1988-02-26 1989-02-20 Teletext decoder arrangements

Country Status (4)

Country Link
US (1) US4908706A (en)
EP (1) EP0330275A3 (en)
JP (1) JPH01251972A (en)
GB (1) GB2215569A (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02152382A (en) * 1988-12-02 1990-06-12 Matsushita Electric Ind Co Ltd Teletext receiver
DE3914697A1 (en) * 1989-05-03 1990-11-08 Inst Rundfunktechnik Gmbh Transmission of teletext data - having data organised as main page data ans as expansion page data
DE4028942A1 (en) * 1990-09-12 1992-03-19 Texas Instruments Deutschland ARRANGEMENT FOR PROCESSING TELETEXT INFORMATION
DE59205883D1 (en) * 1991-01-21 1996-05-09 Siemens Ag Receiver for receiving teletext signals
IT1245455B (en) * 1991-03-15 1994-09-20 Sisvel Spa PERFECTED RECEIVER OF TELETEXT TRANSMISSIONS
JPH05199503A (en) * 1991-08-22 1993-08-06 Fujitsu General Ltd Memory managing method for teletext receiver
DE69218902T2 (en) * 1991-12-18 1997-10-16 Philips Electronics Nv Multi-page teletext decoder
IT1297197B1 (en) * 1992-02-17 1999-08-03 Edico Srl IMPROVED RECEIVER OF TELETEXT TRANSMISSIONS WITH EASY SELECTION.
US5404172A (en) * 1992-03-02 1995-04-04 Eeg Enterprises, Inc. Video signal data and composite synchronization extraction circuit for on-screen display
ATE317585T1 (en) * 1993-09-30 2006-02-15 Sony Corp CASSETTES WITH MEMORY
WO1996024217A1 (en) * 1995-02-02 1996-08-08 Philips Electronics N.V. Merging of video mosaic with teletext
US5835153A (en) * 1995-12-22 1998-11-10 Cirrus Logic, Inc. Software teletext decoder architecture
US5719378A (en) * 1996-11-19 1998-02-17 Illinois Tool Works, Inc. Self-calibrating temperature controller
KR100468670B1 (en) * 1997-07-03 2005-03-16 삼성전자주식회사 Apparatus for interfacing close caption between video decoder and display device and method thereof
TW476066B (en) * 1999-11-09 2002-02-11 Winbond Electronics Corp OSD generation method and structure using dynamic random access memory
CN116704541B (en) * 2023-08-09 2023-10-27 易签链(深圳)科技有限公司 Method for manufacturing and using controlled signed electronic official seal

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0216248A1 (en) * 1985-09-10 1987-04-01 Sony Corporation Videotex terminal with a memory for storing plural picture frames
EP0220763A1 (en) * 1985-10-10 1987-05-06 Koninklijke Philips Electronics N.V. Teletext signal processing circuit for a teletext receiver
US4679083A (en) * 1983-03-02 1987-07-07 U.S. Philips Corporation Teletext device with reduced page-access time
JPS62185482A (en) * 1986-02-10 1987-08-13 Sharp Corp Teletext receiving circuit

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4679083A (en) * 1983-03-02 1987-07-07 U.S. Philips Corporation Teletext device with reduced page-access time
EP0216248A1 (en) * 1985-09-10 1987-04-01 Sony Corporation Videotex terminal with a memory for storing plural picture frames
EP0220763A1 (en) * 1985-10-10 1987-05-06 Koninklijke Philips Electronics N.V. Teletext signal processing circuit for a teletext receiver
JPS62185482A (en) * 1986-02-10 1987-08-13 Sharp Corp Teletext receiving circuit

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
ELEKTRONIK vol. 33, no. 4, February 1984, pages 73-77, Muenchen, D; H. KRINN et al.: "Mehr Speicher Fuer 8-Bit-Mikroprozessoren" *
PATENT ABSTRACTS OF JAPAN vol. 12, no. 30 (E-578)(2877), 28 January 1988; & JP-A-62 185 482 (SHARP CORP.) 13.08.1987 *

Also Published As

Publication number Publication date
JPH01251972A (en) 1989-10-06
US4908706A (en) 1990-03-13
GB2215569A (en) 1989-09-20
EP0330275A2 (en) 1989-08-30
GB8804608D0 (en) 1988-03-30

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